Public Notice - Section 4(f) de minimus Determination for Ackerson-Easterly Wildlife Area
3/18/2026
Public Notice – Section 4(f) de minimus Determination
County: Chickasaw
Project Code: DGA-C019(119)—XT-19
Phase Number: DGA-C019(119)—XT-19
Location: B28 Over WAPSIPINICON RIVER
NEPA ID: 16082
On behalf of the Chickasaw County Board of Supervisors, Public Notice is given pertaining to the Section 4(f) de minimus determination regarding the portion of Ackerson-Easterly Wildlife Area to be utilized in the proposed bridge replacement project on 140th St. (B28) over the Wapsipinicon River (Existing FHWA Bridge#112770). Further details are attached to this cover letter.
This Public Notice requires a 15-day posting period for comments from the public beginning on the date the notice was published. Members of the public with input and/or concerns can submit questions/concerns/comments to the Chickasaw County Engineer in person (2nd Floor Courthouse, 8 E Prospect, New Hampton, IA 50659). Submittals can also be made by mail (Chickasaw County Engineer, PO Box 316, New Hampton, IA 50659), phone (641-394-82321) or email (r.lensing@chickasawcounty.iowa.gov).
Locations of Public Notice Posting:
Chickasaw County Website (chickasawcounty.iowa.gov)
Courthouse Lobby – 1st Floor & 2nd Floor
Chickasaw County Conservation – Twin Ponds Nature Center
Prepared by
Roman Lensing, P.E.
Chickasaw County Engineer
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Attributes of the property: |
Affected attributes: |
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Fishing |
No |
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Hunting |
No |
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Green Space |
Yes |
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Nature/Bird Watching |
No |
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Entrance/Access |
Yes |
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Parking Area |
Yes |
Description of impact avoidance, minimization, and mitigation or enhancement measures incorporated into the project:
Impact to the property was minimized by reducing the size of the wing dikes to the maximum extent possible while still providing adequate flood protection to the proposed structure/roadway. The existing access/parking lot on the NW corner of the existing/proposed structure will be larger once construction is complete, which will benefit those who utilize the Ackerson-Easterly Wildlife area.
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Property details: |
Impact to the property: |
Duration of impact: |
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114.69 Acres |
0.654 Acres; needed to place wing dikes on the new structure and allow proper drainage of ditches. The parking/primary access on the NW corner of the existing structure will be temporarily closed during construction but the property will be accessible from other entrances. The proposed design includes expanding the existing parking area. |
Permanent |
